7Solve the system by elimination.?

2 ⤊

7Solve the system by elimination.?

-2x = 3y + 3; 5x - 2y = -17

2007-12-02 05:53:12 · 2 answers · asked by Anonymous in Science & Mathematics ➔ Mathematics

2 answers

- 4x - 6y = 6
-15x + 6y = 51-----ADD

- 19x = 57
x = - 3

6 - 3 = 3y
y = 1

x = - 3 , y = 1

2007-12-03 10:20:13 · answer #1 · answered by Como 7 · 1⤊ 2⤋

The website below provides worked examples of solving linear equations by elimination.

-2x - 3y =3
5x - 2y = -17

Multiply first equation by 2 and the second equation by -3

-4x - 6y =6
-15x + 6y = 51

Add both equations and x = -3. Substitute back into first equation to find y = 1

Therefore, (x,y) = (-3,1)

2007-12-02 07:30:30 · answer #2 · answered by Anonymous · 1⤊ 0⤋